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Protein & Peptide Letters

Editor-in-Chief

ISSN (Print): 0929-8665
ISSN (Online): 1875-5305

Location and Reduction of Icarapin Antigenicity by Site Specific Coupling to Polyethylene Glycol

Author(s): Ka-Lok Wong, He Li, Kin-Kwan K. Wong, Tao Jiang and Pang-Chui Shaw

Volume 19, Issue 2, 2012

Page: [238 - 243] Pages: 6

DOI: 10.2174/092986612799080211

Price: $65

Abstract

Icarapin is a bee venom protein found to induce IgE-mediated allergic reaction. In this study, icarapin of Asian honey bee was cloned and sequenced. By in silico screening, S198 was found to be the potential antigenic site. This site was changed to cysteine and coupled with PEG5K. Compared to the wild type icarapin and the S198C variant, PEGylated S198C variant induced lower level of IgG and IgE antibodies in mice, showing that it is indeed located in an antigenic site. Our work may be generalized to other proteins for the discovery of antigenic sites and the reduction of antigenicity

Keywords: Allergenic site, allergy, bee venom, icarapin, in silico screening, polyethylene glycol, Apis mellifera, B-cell epitopes, Tribolium castaneum, faintness


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